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A platinum electrode is im mersed in a solution containing 0.1 M Fe2+ and 0.1 M Fe3+. Its potential is found to be 0.77 V against SHE. Und er standard conditions and considering activity coefficients to be equal to unity, the potential of the electrode, when the con centration of Fe3+ is incre ased to 1 M , is ______________
Correct answer is between '0.81,0.85'. Can you explain this answer?
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Most Upvoted Answer
A platinum electrode is im mersed in a solution containing 0.1 M Fe2+ ...
Explanation:
Step 1: Writing the given half reactions
Fe3+ + e- ⇌ Fe2+ (E1/2 = 0.77 V)
Step 2: Calculating the E0 value
The E0 value can be calculated using the Nernst equation
E = E0 - (0.0592/n)log(Q)
where E is the cell potential, E0 is the standard cell potential, n is the number of electrons transferred, and Q is the reaction quotient.
For the given half reaction,
Fe3+ + e- ⇌ Fe2+
E0 = 0.77 V
n = 1
Q = [Fe2+]/[Fe3+] = 0.1/0.1 = 1
Substituting these values in the Nernst equation, we get
0.77 = E0 - (0.0592/1)log(1)
E0 = 0.77 + 0.0592 = 0.8292 V
Step 3: Calculating the new cell potential
When the concentration of Fe3+ is increased to 1 M, the new reaction quotient Q' can be calculated as follows:
Q' = [Fe2+]/[Fe3+] = 0.1/1 = 0.1
Substituting the new values in the Nernst equation, we get
E = 0.8292 - (0.0592/1)log(0.1)
E = 0.8292 + 0.176 = 1.0052 V
Step 4: Rounding off the answer
The potential of the electrode, when the concentration of Fe3+ is increased to 1 M, is 1.0052 V against SHE. Rounding off the answer to two decimal places, we get 1.01 V.
Therefore, the correct answer is between 0.81 and 0.85 V.
Step 1: Writing the given half reactions
Fe3+ + e- ⇌ Fe2+ (E1/2 = 0.77 V)
Step 2: Calculating the E0 value
The E0 value can be calculated using the Nernst equation
E = E0 - (0.0592/n)log(Q)
where E is the cell potential, E0 is the standard cell potential, n is the number of electrons transferred, and Q is the reaction quotient.
For the given half reaction,
Fe3+ + e- ⇌ Fe2+
E0 = 0.77 V
n = 1
Q = [Fe2+]/[Fe3+] = 0.1/0.1 = 1
Substituting these values in the Nernst equation, we get
0.77 = E0 - (0.0592/1)log(1)
E0 = 0.77 + 0.0592 = 0.8292 V
Step 3: Calculating the new cell potential
When the concentration of Fe3+ is increased to 1 M, the new reaction quotient Q' can be calculated as follows:
Q' = [Fe2+]/[Fe3+] = 0.1/1 = 0.1
Substituting the new values in the Nernst equation, we get
E = 0.8292 - (0.0592/1)log(0.1)
E = 0.8292 + 0.176 = 1.0052 V
Step 4: Rounding off the answer
The potential of the electrode, when the concentration of Fe3+ is increased to 1 M, is 1.0052 V against SHE. Rounding off the answer to two decimal places, we get 1.01 V.
Therefore, the correct answer is between 0.81 and 0.85 V.
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A platinum electrode is im mersed in a solution containing 0.1 M Fe2+ and 0.1 M Fe3+. Its potential is found to be 0.77 V against SHE. Und er standard conditions and considering activity coefficients to be equal to unity, the potential of the electrode, when the con centration of Fe3+ is incre ased to 1 M , is ______________Correct answer is between '0.81,0.85'. Can you explain this answer?
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A platinum electrode is im mersed in a solution containing 0.1 M Fe2+ and 0.1 M Fe3+. Its potential is found to be 0.77 V against SHE. Und er standard conditions and considering activity coefficients to be equal to unity, the potential of the electrode, when the con centration of Fe3+ is incre ased to 1 M , is ______________Correct answer is between '0.81,0.85'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about A platinum electrode is im mersed in a solution containing 0.1 M Fe2+ and 0.1 M Fe3+. Its potential is found to be 0.77 V against SHE. Und er standard conditions and considering activity coefficients to be equal to unity, the potential of the electrode, when the con centration of Fe3+ is incre ased to 1 M , is ______________Correct answer is between '0.81,0.85'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A platinum electrode is im mersed in a solution containing 0.1 M Fe2+ and 0.1 M Fe3+. Its potential is found to be 0.77 V against SHE. Und er standard conditions and considering activity coefficients to be equal to unity, the potential of the electrode, when the con centration of Fe3+ is incre ased to 1 M , is ______________Correct answer is between '0.81,0.85'. Can you explain this answer?.
A platinum electrode is im mersed in a solution containing 0.1 M Fe2+ and 0.1 M Fe3+. Its potential is found to be 0.77 V against SHE. Und er standard conditions and considering activity coefficients to be equal to unity, the potential of the electrode, when the con centration of Fe3+ is incre ased to 1 M , is ______________Correct answer is between '0.81,0.85'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about A platinum electrode is im mersed in a solution containing 0.1 M Fe2+ and 0.1 M Fe3+. Its potential is found to be 0.77 V against SHE. Und er standard conditions and considering activity coefficients to be equal to unity, the potential of the electrode, when the con centration of Fe3+ is incre ased to 1 M , is ______________Correct answer is between '0.81,0.85'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A platinum electrode is im mersed in a solution containing 0.1 M Fe2+ and 0.1 M Fe3+. Its potential is found to be 0.77 V against SHE. Und er standard conditions and considering activity coefficients to be equal to unity, the potential of the electrode, when the con centration of Fe3+ is incre ased to 1 M , is ______________Correct answer is between '0.81,0.85'. Can you explain this answer?.
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